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Old 04-12-2017, 03:01 PM   #1
Dont_Blink
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Default 02-03 EJ205 WRX Valve Adjustment

Hey all,

I recently purchased an 02 WRX, the head gaskets blew last summer and the heads warped so they were replaced with new heads, arp head studs and cometic gaskets. This was about 10,000 miles ago.

There is a bit of valvetrain noise, nothing crazy, but its audible for sure. I was wondering if I should get the valve lash checked, I know it was done when the heads were repalced, but the valves put in were brand new so maybe constant heating and cooling on fresh metal parts has resulted in 'settling'?

No idea where im going with this but hopefully it makes sense.
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Old 04-12-2017, 09:51 PM   #2
CarmelValleyWRX
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subies are known for having loud motors. unless it is really loud i would not worry about it. if you are worried about it you can take the cover off and measure to see if you need to adjust them. adjusting would be a PITA because you need shims to change the clearance.
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Old 04-13-2017, 12:09 AM   #3
Dont_Blink
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Quote:
Originally Posted by CarmelValleyWRX View Post
subies are known for having loud motors. unless it is really loud i would not worry about it. if you are worried about it you can take the cover off and measure to see if you need to adjust them. adjusting would be a PITA because you need shims to change the clearance.
So no feeler gauges?
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Old 04-13-2017, 01:44 AM   #4
xxDarkWRXxx
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If you are worried about it use feeler guages to check your clearance when the motor is cold (i.e. room temperature). If one or more are way out of spec then you should worry about it. I'm doing it with my engine out an heads off currently and don't see how you could do it with the engine in the car (I barely have enough room to change the spark plugs).
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Old 04-13-2017, 04:12 AM   #5
Bikelok
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Oh it would be such a major pain with the engine still in the car.
If you like torture, then go for it.
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Old 04-13-2017, 11:37 AM   #6
Dont_Blink
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Good points guys
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Old 04-14-2017, 01:51 AM   #7
monkeyposeur
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If heads were rebuilt with shimless buckets it is impossible to set the valve lash with the heads in the car, but still possible to check clearances with feeler gauges if you take out a bunch of **** but if the need to be replaced or shuffled around the motor must come out.

If the car has shimmed buckets Subaru makes a tool that costs $350 or something that is magnetic and allows you to shimmy the shims out to swap them out with proper thicknessed shims and is a bitch of a job.

Often when the heads are rebuilt the valve lash is set with the heads off the block. When the heads are torqued to the block the heads move and the valve lash is thrown off. Ideally the lash is set with the heads torqued to the block. I have no idea what method your builder followed.

You may also be hearing injector noise. Valve train noise is normal.
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Old 04-14-2017, 11:34 AM   #8
car_freak85
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I've got the tool and I know TheDuc just performed this procedure, in-car, I believe.
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Old 04-14-2017, 11:49 AM   #9
Dont_Blink
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Quote:
Originally Posted by monkeyposeur View Post
If heads were rebuilt with shimless buckets it is impossible to set the valve lash with the heads in the car, but still possible to check clearances with feeler gauges if you take out a bunch of **** but if the need to be replaced or shuffled around the motor must come out.

If the car has shimmed buckets Subaru makes a tool that costs $350 or something that is magnetic and allows you to shimmy the shims out to swap them out with proper thicknessed shims and is a bitch of a job.

Often when the heads are rebuilt the valve lash is set with the heads off the block. When the heads are torqued to the block the heads move and the valve lash is thrown off. Ideally the lash is set with the heads torqued to the block. I have no idea what method your builder followed.

You may also be hearing injector noise. Valve train noise is normal.
I have ID1000 injectors are they louder than stock maybe?
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